MODAPS PCR 06-013

PCR Number 06-013
Date 2006-08-11
Initiator Jim Ray
Abstract Fix to correct the flagging of pixels as atmospherically corrected.
Problem Statement Flagging pixels as atmospherically corrected had been done accurately except for pixels above the terminator (solar zenith values of 85 degrees or more). As of v5.3.8, these pixels are flagged correctly.
Description of Change Reinstatement of code which checks for solar zenith value prior to setting the "atmospherically-corrected" bits in the QA pixels.
Products Affected L2 Land Surface Reflectance (MOD09)
Software Affected PGE11
Processing String to Receive the Change Terra Reprocessing
Downstream Product Effects Land L3+
Data Granules to be Used for Science Testing All granules from data day 2000-065.
Justification This change to the code improves the flagging of data as atmospherically corrected or not, which is crucial to all further implementation of the data by downstream products.
Effective Date for Implementation of Change Data day 2002-055 for C5 Terra Reprocessing.
Status PI approved. Sadashiva Devadiga approved for Land, Vincent Salomonsom approved on 08/24/06